Application of a 1Hz signal to the calibration crystal element mechanically excites the measuring elements resulting in a defined signal output which can be used to perform a full loop check
of the seismic switch.
Some of the key services provided are: mechanical and electrical instrumentation installation, calibration, loop check
, documentation control, start up assistance, electrical testing (including protective relays), transformer oil degasification, engineering assistance, conceptual and definitive estimating, scheduling and planning, job tracking, mechanical process piping installation.
All signals are checked by the automation team in so-called loop checks
so that all notifications, limit values and alerts are correct and to prevent consecutive paper machine faults or possible loss of production.
Following completion of control modules, we can immediately begin loop checks
in the field (providing of course that the field devices are installed and wired)," Weichert and Hannigan explain.
A replaceable fuse version facilitates circuit loop checks
and reduces installation space.
Periodic loop checks
and diagnostic checks should be initiated as a part of a sustained program to maintain control loop performance.
After material on loop checking basics, coverage encompasses factory acceptance testing, wiring and loop checks
, performance benchmarking, and sustaining performance.
Over the next few weeks, as more systems are completed and turned over to the operations group, the Company will be completing pressure tests on the piping systems and will continue instrument loop checks
This is the fifth contract Kentech Kuwait has been awarded on this important project and will see the team cutover 600 existing multicore cables with 6000+ loop checks
carried out within a scheduled 20 day shutdown period.
The Group noted, Yangzi Petrochemical attaches great importance to the work created, organized, arranged, there is action, Yangzi Petrochemical create work and detailed, reflecting the style of large enterprises; archive specification into a book, concise, it is worth learning; electrical and other community safety management, in full accordance with enterprise management, strictly in place; fire-fighting equipment and facilities to form a closed loop checks